formbook | be838fc4e67ed12838f4d0ec554524d54e80a03a3949ced4edfb958edbcb24b8

Analysis

max time kernel
149s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2025, 13:45

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General

Target

REVISED PO009988.exe
Size

646KB
MD5

ba5b2fbbda46bc857101b8737700f671
SHA1

d07d211aeb27c0fb7fdef5956791fccfed6494f1
SHA256

be838fc4e67ed12838f4d0ec554524d54e80a03a3949ced4edfb958edbcb24b8
SHA512

e7503c578b2ee30dcfe9deced81fd206fa50362a1df9f6d2c6fc5e07d70a9a735750470027617d999e4aeedaaa21e806bcb6374c92246f67daf000bf3229f456
SSDEEP

12288:/sf2Thr0xWYGf0iuHfRvb3bvAGv/qlxm2y3A5fYQIkR:UfKhr6WYmTuHKGvClkMgQf

Score

10^/10

formbook bi14 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bi14

Decoy

ilansocials.online

rishticodiegfortyseven.online

ostase-ba.cfd

cinema.tech

omprasyacol.store

esir.shop

umhyal3gvbpl.xyz

lurv.wtf

aospin-sms.xyz

itness-apps-workout1.sbs

reshcarluxury.shop

3xq3.cyou

erraceheatpassion.lifestyle

octurasys.net

ilyrug.net

yj889.xyz

railertof.net

4270766.xyz

sduoduo11.sbs

oeboom.net

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/5228-45-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3644-92-0x0000000000D90000-0x0000000000DBF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
5092	powershell.exe
4312	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3630502724-2561614198-3854231964-1000\Control Panel\International\Geo\Nation	REVISED PO009988.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4588 set thread context of 5228	4588	REVISED PO009988.exe	97
PID 5228 set thread context of 3532	5228	vbc.exe	56
PID 3644 set thread context of 3532	3644	rundll32.exe	56

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	REVISED PO009988.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
4312	powershell.exe
5092	powershell.exe
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
4588	REVISED PO009988.exe
5092	powershell.exe
5228	vbc.exe
5228	vbc.exe
4312	powershell.exe
5228	vbc.exe
5228	vbc.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe
3644	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3532	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
5228	vbc.exe
5228	vbc.exe
5228	vbc.exe
3644	rundll32.exe
3644	rundll32.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	REVISED PO009988.exe
Token: SeDebugPrivilege	5092	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	5228	vbc.exe
Token: SeShutdownPrivilege	3532	Explorer.EXE
Token: SeCreatePagefilePrivilege	3532	Explorer.EXE
Token: SeShutdownPrivilege	3532	Explorer.EXE
Token: SeCreatePagefilePrivilege	3532	Explorer.EXE
Token: SeDebugPrivilege	3644	rundll32.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3532	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 5092	4588	REVISED PO009988.exe	89
PID 4588 wrote to memory of 5092	4588	REVISED PO009988.exe	89
PID 4588 wrote to memory of 5092	4588	REVISED PO009988.exe	89
PID 4588 wrote to memory of 4312	4588	REVISED PO009988.exe	91
PID 4588 wrote to memory of 4312	4588	REVISED PO009988.exe	91
PID 4588 wrote to memory of 4312	4588	REVISED PO009988.exe	91
PID 4588 wrote to memory of 5720	4588	REVISED PO009988.exe	93
PID 4588 wrote to memory of 5720	4588	REVISED PO009988.exe	93
PID 4588 wrote to memory of 5720	4588	REVISED PO009988.exe	93
PID 4588 wrote to memory of 4652	4588	REVISED PO009988.exe	95
PID 4588 wrote to memory of 4652	4588	REVISED PO009988.exe	95
PID 4588 wrote to memory of 4652	4588	REVISED PO009988.exe	95
PID 4588 wrote to memory of 4724	4588	REVISED PO009988.exe	96
PID 4588 wrote to memory of 4724	4588	REVISED PO009988.exe	96
PID 4588 wrote to memory of 4724	4588	REVISED PO009988.exe	96
PID 4588 wrote to memory of 5228	4588	REVISED PO009988.exe	97
PID 4588 wrote to memory of 5228	4588	REVISED PO009988.exe	97
PID 4588 wrote to memory of 5228	4588	REVISED PO009988.exe	97
PID 4588 wrote to memory of 5228	4588	REVISED PO009988.exe	97
PID 4588 wrote to memory of 5228	4588	REVISED PO009988.exe	97
PID 4588 wrote to memory of 5228	4588	REVISED PO009988.exe	97
PID 3532 wrote to memory of 3644	3532	Explorer.EXE	98
PID 3532 wrote to memory of 3644	3532	Explorer.EXE	98
PID 3532 wrote to memory of 3644	3532	Explorer.EXE	98
PID 3644 wrote to memory of 5196	3644	rundll32.exe	99
PID 3644 wrote to memory of 5196	3644	rundll32.exe	99
PID 3644 wrote to memory of 5196	3644	rundll32.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\REVISED PO009988.exe
  "C:\Users\Admin\AppData\Local\Temp\REVISED PO009988.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4588
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\REVISED PO009988.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5092
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aorjhXHEYJs.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4312
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aorjhXHEYJs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB0F1.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5720
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:4652
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:4724
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:5228
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3644
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5196

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
7f121230df23df298520976543be751d

SHA1
bea00c68c9798ef99bd21a44d6bebf9a5a5f4f19

SHA256
8d1ba5940f139b4fd86147f66133ac2dcba3b5c1d985e1f4e050324f55b69973

SHA512
3bee41eefc9d0348226a1ade12346da6666ec4be08a2b8f4685b63dc489fc56b5663b016a83d3a0b63b042cded03310257bb603a3d0fd55bffa5e02295e74155

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfjysykz.j5t.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB0F1.tmp

Filesize
1KB

MD5
c9cc1c6bda45865c5b8057eb1930aa59

SHA1
7232aa17e6d8f33e6e2b01f7500e82f98bd65449

SHA256
2a36d17dc32f5f01fed7759e71cb6ab4f89a7535d06f740d4280c5514b15b655

SHA512
8df64901431a67ee3b5b129557b70c5e55a6d0a5dd734cb6c0c809fe935001970af134ced4a24d218cc09c3b643596e375b166b4d882333f7c87fbc99bd14e01

Download Submit
memory/3532-94-0x0000000008F20000-0x000000000904B000-memory.dmp

Filesize
1.2MB

Download
memory/3644-92-0x0000000000D90000-0x0000000000DBF000-memory.dmp

Filesize
188KB

Download
memory/3644-91-0x00000000005C0000-0x00000000005D4000-memory.dmp

Filesize
80KB

Download
memory/3644-90-0x00000000005C0000-0x00000000005D4000-memory.dmp

Filesize
80KB

Download
memory/4312-79-0x0000000007390000-0x000000000739E000-memory.dmp

Filesize
56KB

Download
memory/4312-81-0x00000000074A0000-0x00000000074BA000-memory.dmp

Filesize
104KB

Download
memory/4312-26-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4312-78-0x0000000007360000-0x0000000007371000-memory.dmp

Filesize
68KB

Download
memory/4312-76-0x00000000071E0000-0x00000000071EA000-memory.dmp

Filesize
40KB

Download
memory/4312-73-0x0000000007010000-0x00000000070B3000-memory.dmp

Filesize
652KB

Download
memory/4312-71-0x00000000063E0000-0x00000000063FE000-memory.dmp

Filesize
120KB

Download
memory/4312-19-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4312-51-0x0000000006DD0000-0x0000000006E02000-memory.dmp

Filesize
200KB

Download
memory/4312-82-0x0000000007480000-0x0000000007488000-memory.dmp

Filesize
32KB

Download
memory/4312-24-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4312-52-0x00000000751F0000-0x000000007523C000-memory.dmp

Filesize
304KB

Download
memory/4312-88-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4588-48-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4588-10-0x0000000006840000-0x00000000068B8000-memory.dmp

Filesize
480KB

Download
memory/4588-1-0x0000000000B60000-0x0000000000C04000-memory.dmp

Filesize
656KB

Download
memory/4588-2-0x0000000005A90000-0x0000000006034000-memory.dmp

Filesize
5.6MB

Download
memory/4588-0-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/4588-3-0x00000000054E0000-0x0000000005572000-memory.dmp

Filesize
584KB

Download
memory/4588-4-0x0000000005580000-0x000000000561C000-memory.dmp

Filesize
624KB

Download
memory/4588-5-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4588-6-0x0000000005480000-0x000000000548A000-memory.dmp

Filesize
40KB

Download
memory/4588-7-0x0000000005950000-0x0000000005962000-memory.dmp

Filesize
72KB

Download
memory/4588-8-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/4588-9-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-77-0x0000000007600000-0x0000000007696000-memory.dmp

Filesize
600KB

Download
memory/5092-20-0x00000000050A0000-0x00000000050C2000-memory.dmp

Filesize
136KB

Download
memory/5092-16-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-25-0x00000000059D0000-0x0000000005D24000-memory.dmp

Filesize
3.3MB

Download
memory/5092-15-0x0000000002750000-0x0000000002786000-memory.dmp

Filesize
216KB

Download
memory/5092-75-0x0000000007380000-0x000000000739A000-memory.dmp

Filesize
104KB

Download
memory/5092-80-0x00000000075C0000-0x00000000075D4000-memory.dmp

Filesize
80KB

Download
memory/5092-17-0x0000000005210000-0x0000000005838000-memory.dmp

Filesize
6.2MB

Download
memory/5092-18-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-74-0x00000000079C0000-0x000000000803A000-memory.dmp

Filesize
6.5MB

Download
memory/5092-89-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/5092-22-0x0000000005920000-0x0000000005986000-memory.dmp

Filesize
408KB

Download
memory/5092-53-0x00000000751F0000-0x000000007523C000-memory.dmp

Filesize
304KB

Download
memory/5092-49-0x00000000061C0000-0x000000000620C000-memory.dmp

Filesize
304KB

Download
memory/5092-47-0x0000000006050000-0x000000000606E000-memory.dmp

Filesize
120KB

Download
memory/5092-21-0x00000000058B0000-0x0000000005916000-memory.dmp

Filesize
408KB

Download
memory/5228-45-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download